Ditching-machine.



invitan raras retirarte? GEORGE A. OMWAKE, OF GROMER, OHIO.

Dinamico-MACHINE.

Specification of Letters Batent.

restent-@fi .rime ie, ieee.

`ltpplieation filed November 2Q, 190'?. .Serial No. i3d-,857.

' and exact description ci the invention, such as Will enable others skilledin the art to which it appertains to make and use the saine, reference being had. to the accompanyin drawings, and to the letters and figures of re erence marked thereon, which form a part of this specification.

My invention relates to improvements in ditching machines, of that class in which the vu on the ring.

scoops or shovels are mounted upon the periphery of a stout rin ,-that is, a Wheel hav ing no spokes or hug, n ported internally upon rollers and being iven by gears engaged with a circular rack ln this class of ditching rna- `lc lines a serious (.iifliculty heretofore encountered is'that the shovels or scoops fail to clear themselves of earth, especiall f in Wet or clayey ground. Various devices tried for obviating this objection but have not 'proved satisfactory'. My invention is designed to overcome the difficulty here indicated, and., 'more particularly, to provide an attachment for machines of the character indicated. which sha-li quickl and certainly clean each ci the scoops or si ovels as soon as it has performed its work; Winch shall be chea i, durable, and highly efficient, and which ina be attached to any of the ma chines oi' t iis class already iii use. l acc-oinplish these results by means of the devices and arrangement of parts hereinafter describedand shown, and illustrated in the ac conipanying drawings, in Which,- l

Figure 1 is a side-elevation of theJ digging mechanism of a machine of the described character provided with my scraping device;

L', a sectional front-elevation of a portion of the same, taken on line .fr-a', Fig. 1; Fig. 3, a bottom plan view of my scraper, hereinafter referred to, detached, and Fig. 4, a central vertical sectional elevation of one of the scoops or shovels with which my 'sera )er is designedv to cooperate.

Lilie nulli-orale oi' reir-rence indicato likoparts ti'iroughout the drawings.

in thix drawings, l is a large stout ringY coinposed oi two parallel rims ilL and provided ivithcircular racks 2 engaged and driven hy -the ring being supave beengear-vvheel 3. `rhe ringi is suoported upon and iided by. a series ci' rollers e which, trave upon internal tracks 5 upon the rirns' 'These rollers are supported by 'and jour Pf" naied upon a stout trarne e, projecting rearu Wardly from the machine, hetweentwo parallel parte of which frame the ring i revolves. y

The two rims of which the rinfT i 1s composed are secured in .separated Arelation and are.

spaced apart and braced by means of scoops or shovels T, which are su hstantiallyU-shaped in cross-section, the forward end of the scoop being'prcvided with a cnttiiw edge Vathoother end being inclined bacnivarrily enig partly closed, as at 7l, (see Fig. Il). The rin,D 1 is usuallyprovided with a series of cutters 8, secured` between the rings l E' and Which opcrate in advance of the scoops 7.

9 is an endless apron or conveyer mounted. upon the traine 6 directly beneaththe `topniost part of the ring i. is. arranged to receive the earth as it drops from the inverted scoops as they snc-- cession above the apron after having resnectively made their out. The apron is arranged to carry and deposit the earth as it is received oil to one side oi the ditch.

The machine thus far described is oi a Well known type, anti its construction .and operation Wili be understood Without further illustration or description. y

'l0 is a t-sha eti-scraper curved to coni'orin substantial y to the interior transverse curvature oi the scoops 7 and having its ein tronlities attached to or crit-ended ii the extremities of which are pivoteri, as et 1i?, upon the frame oi the machine. The arms' 11 lie outside of and parallel with the rinis it, but near their ends opposite the pivots i2 the` arms are bent inwardly, as at l l, so that the U-shaped upwardly curved scraper lies between the riins l and in such position thatA the scraping edge of the scraper 10de-presented to the inner surface of the scoops as they successively pass the scraper. Tivo This endless anton hars 13 and 14 are secured at their lower ends i lor 'the a n ii. [is sho 'n in ii spring ti braces i3 "e dupiica^`- opposite sii .il

braces heine rininejted by croswhai. H3

.-The springs 'i5 hold the pivote'd scraper 4presse above rectly upon th -of the machines discharge top of their circularpath, a lconveyer dis,

`normally upward s o that thescrapingedge'of the scraper strikes and follows.

and cleans the concave surface of each of thev scoops 7. ,as'ait passes in invertedposition the endless apron-9.

constantly at their-full capacity without beeomingpackedor clogged withfearthor clay that the scrapings from the-scoops fall di-v apron and are prevented from allng'back" into vthe excavation, and i Ithatthe scraper is readily accessible for re newals, repairs,- andfor sharpening and may their contents by gravity at the .It will be seen. ,that thus' the scoops are enabled to work posed vbeneath the point of such discharge; and afs ring-controlled scraper disposeddirectly a ove said conveyer and a each 'of the scoops in the series.

24, In a device .of the described clfiavracteiy:`

a circular rotatable series of scoops dispose in a vertical plane and adapted to discharge their contents by gravity at the uppermost.-

.poin't in their circular path7 a conveyor dis'- posed directly beneath such point of disa frame for the support of the 'series of scoops, a scraper disposed directly above said conveyer7 pivotal connections between and a spring the scraper, and the frame,

which holds said scraper pressed normally upward. 4

In testimony whereof I affix i'ny signature in presence of .two witnesses.

GEORGE A. OMWAKE.

Witnesses: CLAYTON MURPHY,

ADA CAMERQNh apted to scrape successively theinterior under side of 

